YING Yanxiang,WEI Guoying*,HE Panliang,et al.Effect of Temperature Gradient on the Surface Properties of Ceramic Anodic Oxide Film on A2024[J].Plating & Finishing,2020,(5):25-31.[doi:10.3969/j.issn.1001-3849.2020.05.0040]
温度梯度对铝合金A2024瓷质阳极氧化膜表面性能的影响
- Title:
- Effect of Temperature Gradient on the Surface Properties of Ceramic Anodic Oxide Film on A2024
- 文献标志码:
- A
- 摘要:
- 在阳极氧化过程中通过设置温度梯度，对铝合金A2024表面进行了瓷质氧化，并对氧化膜的形貌、硬度、膜厚、耐磨性及耐蚀性进行了研究。结果表明，相同条件下，采用温度梯度法制备的瓷质氧化膜，其均匀性、膜厚和硬度等性能都优于恒定温度氧化法制备的氧化膜，膜的质量得到了很大的提高。温度梯度氧化法制备的瓷质氧化膜硬度最高为1100 HV左右，自腐蚀电位在-0.3 V到-1.1 V之间，摩擦系数为0.25。进一步研究发现瓷质阳极氧化的最佳工作温度区间在20 ℃~30 ℃（温度梯度为5 ℃）。在阳极氧化过程中设置温度梯度可以降低生产中氧化温度的严格要求，还可以降低能量损耗。
- Abstract:
- The ceramic anodizing film on A2024 aluminum alloy was prepared by controlling the temperature gradient. The morphology, hardness, thickness, abrasion resistance and corrosion resistance were observed and analyzed. The results showed that surface properties of the anodized A2024 were greatly improved. The thickness, hardness and uniformity of the anodic oxide films prepared under temperature gradient conditions are far superior to that of the traditional ceramic anodic oxide films. The hardness of the ceramic oxide films prepared through the temperature gradient oxidation method is about 1100 HV. The self-corrosion potential is from -0.3 V to -1.1 V under the condition of the temperature range between 20 ℃ and 30 ℃（temperature gradient is 5 ℃）, which can not only reduce the stringent requirements of the anodic oxidation temperature, but also reduce energy consumption.
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备注/Memo
收稿日期： 2019-11-04；修回日期： 2020-02-21
通信作者： 卫国英， email： guoyingwei@cjlu.edu.cn
基金项目： 国家自然科学基金（51471156）